25410420420 has 192 divisors, whose sum is σ = 89345894400. Its totient is φ = 5241968640.

The previous prime is 25410420383. The next prime is 25410420437. The reversal of 25410420420 is 2402401452.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 622396 + ... + 661964.

It is an arithmetic number, because the mean of its divisors is an integer number (465343200).

Almost surely, 2^25410420420 is an apocalyptic number.

25410420420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25410420420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44672947200).

25410420420 is an abundant number, since it is smaller than the sum of its proper divisors (63935473980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25410420420 is a wasteful number, since it uses less digits than its factorization.

25410420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39738 (or 39736 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 25410420420 its reverse (2402401452), we get a palindrome (27812821872).

The spelling of 25410420420 in words is "twenty-five billion, four hundred ten million, four hundred twenty thousand, four hundred twenty".